Exhibit 99.2

                                POWER OF ATTORNEY

       KNOW ALL MEN BY THESE PRESENTS THAT the undersigned hereby constitute and
 appoint JAMES P. GALLAGHER, WILLIAM SONG and JOSHUA L. TARGOFF and each of them
 severally, as the true and lawful attorneys and agents of each of the
 undersigned, with power to act with or without the others and with full power
 of substitution and resubstitution, to execute in the name, place and stead of
 each of the undersigned any statements, reports or filings with respect to the
 undersigned (whether such filing includes one or more or all of the
 undersigned) necessary or advisable in connection with any disclosure
 requirement promulgated under the federal or state securities laws of the
 United States or any other applicable regulatory body, including, without
 limitation, the Company's compliance with the Securities Exchange Act of 1934,
 as amended, and the rules and regulations promulgated thereunder (including,
 without limitation, any filings on Schedule 13D, Schedule 13G, Form 3, Form 4,
 Form 5 and Form 13F and any forms or statements required to be submitted in
 connection with any electronic filing), and any and all amendments to such
 statements, reports and filings, and any disclosure requirement promulgated
 under the securities laws or any similar laws or regulations of any
 jurisdiction whether inside or outside of the United States, and all amendments
 to such statements, reports and filings, and to file the same, with all
 exhibits thereto, and all other documents in connection therewith, with the
 United States Securities and Exchange Commission or any other applicable
 regulatory body, said attorneys and agents having full power and authority to
 do and perform in the name and on behalf of any of the undersigned every act
 necessary to be done in the premises as fully and as effectually as the
 undersigned might or could do in person; and each of the undersigned hereby
 ratifies and confirms all that said attorneys and agents shall do or cause to
 be done by virtue hereof.


       IN WITNESS WHEREOF, the undersigned has subscribed these presents as of
February 9, 2011.

                                                              /s/ Daniel S. Loeb
                                        ----------------------------------------
                                                                  Daniel S. Loeb

                                                                 THIRD POINT LLC


                                       By:                    /s/ Daniel S. Loeb
                                             -----------------------------------
                                        Name:                     Daniel S. Loeb
                                        Title:           Chief Executive Officer



                                                         THIRD POINT PARTNERS LP
                                        By:            Third Point Advisors LLC,
                                                             its General Partner


                                       By:                    /s/ Daniel S. Loeb
                                             -----------------------------------
                                        Name:                     Daniel S. Loeb
                                        Title:                   Managing Member

                                               THIRD POINT PARTNERS QUALIFIED LP
                                        By:            Third Point Advisors LLC,
                                                             its General Partner


                                       By:                    /s/ Daniel S. Loeb
                                             -----------------------------------
                                        Name:                     Daniel S. Loeb
                                        Title:                   Managing Member

                                              THIRD POINT ULTRA MASTER FUND L.P.
                                        By:      Third Point Advisors II L.L.C.,
                                                             its General Partner


                                       By:                    /s/ Daniel S. Loeb
                                             -----------------------------------
                                        Name:                     Daniel S. Loeb
                                        Title:           Chief Executive Officer

                                                  LYXOR/THIRD POINT FUND LIMITED
                                        By: Third Point LLC, its Trading Advisor


                                       By:                    /s/ Daniel S. Loeb
                                             -----------------------------------
                                        Name:                     Daniel S. Loeb
                                        Title:           Chief Executive Officer

                                                      dbX-RISK ARBITRAGE 11 FUND
                                        By: Third Point LLC, its Trading Advisor


                                       By:                    /s/ Daniel S. Loeb
                                             -----------------------------------
                                        Name:                     Daniel S. Loeb
                                        Title:           Chief Executive Officer

                                          THIRD POINT OFFSHORE MASTER FUND, L.P.
                                        By:      Third Point Advisors II L.L.C.,
                                                             its General Partner


                                       By:                    /s/ Daniel S. Loeb
                                             -----------------------------------
                                        Name:                     Daniel S. Loeb
                                        Title:                 Managing Director

                                                  THIRD POINT ADVISORS II L.L.C.


                                       By:                    /s/ Daniel S. Loeb
                                             -----------------------------------
                                        Name:                     Daniel S. Loeb
                                        Title:                   Managing Member